A163481 Row 0 of A163336 (column 0 of A163334).

0, 5, 6, 47, 48, 53, 54, 59, 60, 425, 426, 431, 432, 437, 438, 479, 480, 485, 486, 491, 492, 533, 534, 539, 540, 545, 546, 3827, 3828, 3833, 3834, 3839, 3840, 3881, 3882, 3887, 3888, 3893, 3894, 3935, 3936, 3941, 3942, 3947, 3948, 4313, 4314, 4319

Offset: 0

Author

Antti Karttunen, Jul 29 2009

Keywords

• nonn

Crossrefs

Cf. A163480 (X axis), A208665 (Z-order Y axis).

Programs

PARI

a(n) = my(v=digits(n,3),s=Mod(0,2)); for(i=1,#v, s+=v[i]; v[i]=3*v[i]+if(s,2)); fromdigits(v,9); \\ Kevin Ryde, Oct 06 2020

Formula

From Kevin Ryde, Oct 06 2020: (Start)

a(n) = A163332(A208665(n)), including at n=0 by reckoning A208665(0)=0.

a(n) = 3*A163480(n) + (2 if n odd).

(End)